Electrochemical cells Quiz
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5 questions, one answer each
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1. In a zinc-copper cell, which metal is the negative terminal?
- A. Copper
- B. Zinc
- C. Both
- D. Neither
2. Which pair of metals would give the highest voltage in a simple cell?
- A. Iron and zinc
- B. Zinc and copper
- C. Magnesium and copper
- D. Iron and copper
3. What is the main difference between an electrolytic cell and an electrochemical cell?
- A. Electrolytic cells use two different metals
- B. Electrochemical cells need a power supply
- C. They are the same
- D. Electrolytic cells use electricity to cause a chemical change
4. What is the only product of a hydrogen-oxygen fuel cell?
- A. Water
- B. Carbon dioxide
- C. Hydrogen peroxide
- D. Ash and smoke
5. A student says that electrons flow through the electrolyte from one metal to the other. What is wrong?
- A. Nothing, it is correct
- B. Electrons flow in the external wire, and ions carry charge through the solution
- C. Electrons do not flow at all
- D. Protons flow in the wire